<?hh // strict
/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the "hack" directory of this source tree.
 *
 *
 */

class B {
  const Y = 0;
}

class A {
  const X = B::Y;
}

function foo(): bool {
  return A::X;
}
